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The d & f Block Elements — Chemistry STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceChemistryThe d & f Block Elements1 Mark
MCQ
The transition metal used in X-rays tube is:
  • A
    Mo
  • B
    Ta
  • C
    Tc
  • D
    Pm
✓

Answer

  1. Mo

Explanation:

Among given metals, molybdenum is used in X-rays tube. In medical X-ray tubes the target is usually tungsten or a more crack-resistant alloy of rhenium (5%) and tungsten (95%), but sometimes molybdenum is used for more specialized applications, such as when softer X-rays are needed as in mammography.

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